The measure of minor arc EF is between...?

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The circle above is circumscribed around square ABCD. Points E and F lie on minor arcs AB and CD respectively. The measure of minor arc EF is between?

A. 90° and 270°
B. 90° and 180°
C. 60° and 120°
D. 0° and 90°
E. 0° and 180°

The OA is B.

I'm confused with this PS question. Experts, any suggestion? I appreciate your help. Thanks in advance.
Source: — Problem Solving |